Where there's a will there's a way, modifications are the norm when building Hot rods. Do you have pictures? Are you offsetting the engine for the Volare? Many with Volare's off set the engine a couple inches to the right for steering shaft/header clearance. That may produce more clearance issues than the pinion offset. 2" at the rear axle does not angle the driveshaft a whole lot at the tranny, but if it is tight, there are ways to get more room. How far behind the front universal is the crossmember? How far apart are the arm mounts?